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Water Heater Installation in Longview, WA

Tell us about the house, and a licensed contractor who covers Cowlitz County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
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Your water heater works long hours here

Longview homes need heat from September through June, ten months a year, and a water heater runs on that same schedule day in and out. Winter nights here average 33 degrees, so the tank spends a good part of the year working harder than a mild-climate heater ever has to.

Cowlitz County has seen six winter storms and five damaging wind events over the past ten years, and in 2024 nearly a quarter of Washington households lost power for at least a day. That history is worth weighing when you choose between gas and electric. Whatever you pick, the new tank has to meet the federal minimum efficiency set for its size, since that standard is written separately for each tank volume rather than as one number for every heater.

33°F
the average winter night, and colder incoming water means longer heating
10 months
September through June, the months homes here need heat
23%
of Washington households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
Isometric cutaway illustration of a single-story house with a dark shingled roof, showing interior rooms with furniture, a bathtub, sinks, pipes, and a cylindrical water heater with a vent pipe extending through the roof.
Your water heater works hardest from October through April.

NOAA nClimDiv, 1991–2020 normals

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A heat pump water heater would save about $280 a year to run in Washington compared with an electric water heater.

  • A heat pump water heater$110 a year
  • A gas water heater$210 a year
  • An electric water heater$390 a year

Estimates for a typical Washington home, from EIA household energy data and Washington fuel prices. Your home will differ.

How do I know it's time to replace my water heater?
The clearest sign is age. Most tank water heaters last about 10 years, and once you're past that, any repair is a gamble against the next one. Water pooling at the base usually means the tank itself is failing, and that's not something to patch. Rusty hot water, a tank that's noisy when it heats, or hot water that runs out faster than it used to are all signs the tank is on its way out. If your water heater is old and starting to act up, replacing it before it fails is easier than dealing with a flooded closet or garage.
Should I switch to a tankless water heater?
It depends on what you want out of it, not on your current heater failing. A tankless unit heats water as it flows through instead of storing it, so you don't run out of hot water partway through a shower, and it doesn't sit there keeping a full tank of water hot when you're not using it. It costs more upfront and needs venting and gas or electric service sized for it, so a contractor will need to look at your home to say whether the switch makes sense. It comes down to your hot water habits and what your home can support.
What changes when you install a tankless water heater?
The biggest change is that there's no tank storing hot water, so the unit only heats water while it's flowing. That means it needs enough gas supply or electrical capacity to heat water on demand, which is often more than a storage heater needs at any single moment. Venting is different too, since a tankless unit vents at a different rate and often through a different type of pipe than a tank did. Because of that, installing one usually means more than swapping the old unit for the new one. A contractor can walk through what your gas line, electrical panel, and venting can support before recommending it.